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1) Soft-switch inverter system, 2) Full digital control syste, 3) 3 process: AC TIG/DC TIG/MMA, 4) Multiple AC Wave, 5) AC BIAS - details see: https://www.machineto.com/digital-ac-dc-aluminium-tig-welding-machine-10133868

Professional AC/DC PULSE TIG Welding Machine: MASTER TIG-200AC/250AC

Features:

1) IGBT inverter system, Soft Switch technology.

2) Full Digital controlling system, 64 byte MCU+DSP inside.

3) 3 workding modes:AC TIG/ DC TIG/ MMA.

4) Embedded welding expert database, Flexible parameters adjustment.

5) Memory: Capable for storing 10 sets of user-defined parameters.

6) HF Arc Start, Arc Force, Anti-Stick.

7) Multiple AC Waveform available.

8) AC Bias(EP/EN) & AC Balance adjustable for precise welding.

9) 2T(STD)/4T(HOLD) control mode.

10) Available to connect Foot Pedal(optional).

11) Over Heat, Over Current protection, Input voltage regular fits.

Item No.	MASTERTIG-200AC	MASTERTIG-250AC
Input Voltage	1PH ~ 220/230/240V 50/60Hz
Input Power Capacity	7.4KVA	10KVA
No-load Voltage	60-80V	60-80V
Output Current Range	5-200Amp	5-250Amp
Rated Duty Cycle (40oC)	60% 200Amp	60% 250Amp
Pulse Frequency Range	0.2-20Hz	0.2-20Hz
Pulse Width Range	1-100%	1-100%
Current Up-slope Time	0.1-10S	0.1-10S
Current Down-slop Time	0.1-15S	0.1-15S
AC Frequency Range	20-100Hz	20-100Hz
AC Balance (SP Value)	-40 -- +40	-40 -- +40
AC Bias (EP/EN) Value	-50 -- +30	-50 -- +30
Arc Force Adjusting	1-10	1-10
Gas Pre-flow/Retard Time	0.1-15S	0.1-15S
Dimension (LxWxH)	517x230x451mm	517x230x451mm
Weight (KG)	23KG	23KG